Sam1300 Sam1300

02-03-2015
Mathematics

contestada

X+3y=5
-2x-6y=-10

Solve using elimination

Respuesta :

apologiabiology apologiabiology

02-03-2015

slimination
multiply first equaiton by 2
2x+6y=10
add to second equiaotn
2x-2x+6y-6y=10-10
0=0
this is true so therfor they are the same equaiton

so solve
x+3y=5
3y=-x+5
y=-1/3x+5/3

subsituter values for x and get valuse for y

if x=2 then y=1

Answer Link

Otras preguntas

Molecules can be made of atoms of

Which of the following is the coefficient in the algebraic expression 12x+z?

1. Six cases of paper cost $159.98. How much does one case cost? 2.There are 2.54 centimeters in one inch. How many inches are there in 51.78 centimeters? 3. E

Find the sum or difference of 1/2x-8+1/2x-2

A chicken with black feathers (BB) is crossed with a chicken with white feathers (WW). The offspring have black and white feathers. What is the genotype of the

The library is at point (1,1). The gym is at point (1,-4). The chemistry lab is at point (-3,6). The restrooms are at point (-3,1). The teacher's lounge is at p

We have a right triangle that has am 8 meter and 21 meter leg .Find the hypotenuse

Please help I will mark Brainly

jen wants to tile the floor of her kitchen. The floor is rectangular and measures 12 feet by 8 feet. if it costs $2.50 per square foot for the materials, what i

Which questions might you ask an abolitionist if you follow the 5 Ws and H format? Select all that apply. 1.)Where did you give speeches? 2.) How did you prepa